Tube-vulcanizing device



ril 6 1926. Ap J. R. RYAN TUBE VULCANIZING DEVICE Filed oct. 16,

arr/failli n.. ESE-Engg m e 111' -Rlfyan't Vw/Izzy@ Wemq Patented Apr. 6, 192.6.

UNITED STATE-s4 PATENT oFFicE-.x

JERRY n. RYAN, or sr'. PAUL, MINNEso'rA', AssieNoiaBy MEsNE ASSIGNMENTS, 'ro

xE HAW xn lMANmi'Acrtnsnnm comrANY, or MINNEAPOLIS, MrNNEsorA'.

TUBE-VULCANIZING DEVICE. v

Application led October 16, 1924.` Seriall No. 743,928.

To all whom 'it may concern:

Be it known that L'JERRY R. RYAN, a

citizen of the United States, residin at St.

^ Paul, in the county of Ramsey and tate of Minnesota, have invented certain new and Devices and I do hereby declare the following to be a full, clear, and exact description of the invention, such .as will enable others skilled in the art to which it appertains to -make and use the same. .LA

In the accompanying drawings, which illustrate the invention, like characters indicate like parts -throughout the several views.

Referring to the drawings:Y

Fig. 1 is a perspective view of the 'im` proved vulcanizing device;

Fig. 2 is a longitudinal centralvsection, on

an enlarged scale, and illustratinmy an inner tube held on the device during the vulcanizing process to secure a valve base thereto;

and

Fig. 3 is a transverse vertical section-taken on the line 2-2 of Fig. 1;

The, numeral 4 indicates a hollow body preferably formed of castmetal and the interior thereof' affordsa -heating or steam chamber 5 adapted to receive steam as a' heating agent. Steam isadmitted to .the heating chamber 5 through a steam pipe 6, leading from any suitable source of supply. not shown: This steam pipe 6 is tapped into a boss on-the back of the. body 4 at the center thereof and affords a 'support for the u wilcanizing device. 'Attached to thebottom of the body 4, close to one end thereof, is a normally closed valve 7 which leads fromv .the steam chamber 5 andthro h which i4 condensed steam may be drawn o or said valve may also be used to facilitate a free ow of steam in the-steam chamber.

This body 4, as shown, is rectangular -.sage

horizontal cross section, 'and thebottom thereof isf rounded transversely from the front to the rear. The top of the body 4 isA flat and affords a work-supporting surface f 8 for -articles to bevulcanized such as inner tube 9, as shown in Figs'. 2 and 3. Articles 00 to be vulcanized are held pressed on the Work-supporting surfacevS` by a clamping device while being treated by the'heat of the steam 'conducted through said. worksupporting surface. This clamping device includes 05 a fiat plate 10 which is held in its proper position upon t-lie inner tube 9 under the re. quired or desired pressure by a hand screw l11 having screw-threaded engagement withv the free end of a U-shaped arm 12 which 70 overlies the work-supporting surface 8.

The arm 12 at its lower end is hinged" at 13 to and between a pair of depending hinge lugs 14 cast integral with the bottom of the body 4 for vertical swinging'movement. T5

This arm 12 extends upward transversely over the body-,4 at the front thereof and -when not in use hangs down under said body so that the saine is entirely out of the way and does not interfere with the operator. The lower end of the hand screw .11 isA pointed and seated in a cup-shaped seat 15 .formed in thetop of the clamping plate 10 at the center thereof. This engagement of the hand screw 11 with the plate 10 per- 85 mits said platel to freely adjust itself .onto the inner tube 9 so that it will press equally thereon at all points and it alsomaterially facilitates the free turning movement of the hand screw l1 on the plate 10. 90

'.Preferably, as shown inY Figs. 21 and 3, a

bag containing powdered soap stone, or other suitable materiahis interposed between the inner tube 9 and clamping plate 10, especially when vulcanizing a valve base'tofan inner A05 tube, to compensate for ther varying-thickness in the inner tube and securely pressthe saine at all points onto the work-supportin surface 8. Y

provide means for vreceiving a straight alve stein or a bent or crooked valve stemeither of the angle orf double bent type and thus permit an inner tube and its valve ,base to be placed on the work-supporting 'surface 8 'for' v ulcanization without distorting, in- 106 Yjuring or otherwise affecting the abric thereof or the vvalve stein, 'there is formedY inthe top ofthe body 4 avalve stem pasway 17- which leads to a'valve'stem ber 18. .f nl veno To insure a snug freely receive a bent valve stem either of the angle or double lbent type. This formation of the valve stem chamber 18 is of the utmost importance 'and by reference to Fig. 2, it will be noted that the size of the valve stem passageway 17 and the valve stem chamber 18 is such as to freely receive a straight valve stem 19, as indicated by broken lines in Fig. 2, or a bent valve stem 20, as indicated by full lines inFig. 2. Y

lit of a valve stem in the passageway 17 and properly centralize the same therein, there is provided interchange ably usable bushings or rings 21 of the same external diameter and adapted to be removably mounted in a recessed seat 22 in the mouth of the passageway A17 at the worksupporting surface 8. The axial openings in these bushings vary in size to fit different sized valve stems. l Y

When avalve stem base is to be vulcanized to an inner tube or the inner tube vulcanized in the immediatef'vicinity of its valve stem one of the bushings, 21 of the proper size is telescoped onto the valve stem and said valve stem inserted through the passageway 17 and into the valve steinl chamber 18; At the lcompletion of this movement of the-valve stem, the respective bushing 21 will enter the seat Vv22 andautomatically center the valve stein in the passageway 17 and at the same time form a tight joint between said valve stem and theY work-supporting -surface 8. With the valve Ystem thus positioned,

' the respective portion of the inner tube and the valve base will die flat Aupon the workf supporting surface 8 without Vdistorting the "tube or valve stem base. The bag 16 is then placed on the inner tube and the plate 1U on said bag. The arm 12 is then swung ward to position thehand screw Y seat 15 andsaid hand screw is adjusted to engagethe plate' 10 and press thesame onto the bag l16 which in turnpres'ses' the inner tube and valveJbase onto, the work-support-V` A ing surface 8. under the Zdesired pressure.

Steam is then introduced into the steam'f chamber 5 and the heat conducted through u 11 over the work-supporting surface 8 will act on the ber having a heating chamber, a valve stem.

chamber, a. work-supporting surface, and a valve stem passageway leading from sa1d work-supporting surface to the valve. stem chamber, said valve stem chamber being extended laterally from the projected axes of said passageways to aford clearance for a bent valve stem inserted through said passageway.

2. vA vulcanizer comprising a body member having a heating chamber, a valve stem chamber, a work-supporting surface, a valve stem passageway leading from saidl work- `supporting surface to the valve stem chamber, a clamping arm hinged to said body for transverse swingingmovement over the top of the work-supporting surface, a clamping screw mounted on thefree end of the arm, and a clamping plate adapted to be interposed between the clamping screw and workand surrounded by the heating chamber, theV top of said body affording a work-supporting surface, and a passageway leading from ioo the work-supporting surface to the valve.'

stem chamber, said valve stem chamber be-v ing extended longitudinally :from the pro, jected axis of said passageway to afford clearance for a bentv valve stem inserted through. said passageway, said passageway gidng relatively narrow transversely of said Ly The structure defined in claim 1 in which the valve stem passageway is ro- 4vided with an expanded vport-ion -to a ord a seat and in further'combination with interchangeably usuable washers removably mounted in said seat.

-. In testimony whereof I aix my signature.Y

JERRY R. RYAN. 

